Mossberg MVP LR 5.56 NATO bolt diameter

Whiskey_Sour

Private
Minuteman
Mar 22, 2018
24
2
"I'm having a custom bore guide made, but I need to know the bolt diameter for the 5.56 MVP LR.

Thanks" Mossberg answer: "Thank you for your e-mail. Unfortunately, the bolt diameter is proprietary information, per engineering, and we are unable to release that information. I apologize for any inconvenience. Have a great day."

Anyone have the secret "proprietary information" ?
 
Rifle is on Lay-away, one of them needed the info, I wanted to get the ball rolling on the bore guide instead of waiting 4-5 months, I have a set of calipers. Must be the only one in the WHOLE world that will be privy to this info.